240 cfm fan is kind of loud...

you can make/buy an insulated box for it and hang it inside with bungee cords. also can get /make an exhaust muffler.
 
the exhaust end is fine, can't hear a thing on that end. its the room with the tent so maybe a box may be my option...
 
Speed controller.

I have found that fans work just as well on half speed and are much less noisy.
 
Just make a mount using some small thick vacuum belts suspended from the ceiling with hooks, attach the fan to a piece of plywood with hooks on the top to hang from the belts. You can do it for less than 40 bucks
 
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